A shuttle and reed continuous contact rolling guide pair and circular loom

Abstract

The invention discloses a rolling guide pair with continuous contact between a shuttle and a reed piece and a circular loom, belonging to the field of textile equipment. The circular loom comprises an annular shuttle and a shuttle, wherein the annular shuttle comprises an upper ring track, a lower ring track and a reed piece, and the shuttle is provided with a shuttle back wheel which performs circular motion relative to the annular shuttle; the reed piece comprises two integrally formed inclined sections, the two inclined sections form a V-shaped structure, and the V-shaped opening is arranged horizontally, the width of the shuttle back wheel is W, the angle between the inclined section corresponding to the upper 1 / 2 width of the shuttle back wheel and the axis of the shuttle back wheel is β1, the angle between the inclined section corresponding to the lower 1 / 2 width of the shuttle back wheel and the axis of the shuttle back wheel is β2, the thickness of a single reed piece is δ, the spacing between adjacent reed pieces is L, δ>0, L>0, |β1|>tg ‑1 (2L / W), |β2|>tg ‑1 (2L / W), |β1|=|β2|. The invention has the effects of simple structure, stable operation, low noise, greatly improving the shuttle movement speed and service life, and reducing the impact on the quality of the cloth surface.

Description

Technical Field

[0001] The invention relates to the technical field of textile equipment, in particular to a rolling guide pair with continuous contact between a shuttle and a reed and a circular loom. Background Art

[0002] The circular loom is a textile equipment that uses PP (polypropylene) or HDPE (high-density polyethylene) flat yarn as raw material to weave cylindrical woven fabrics. It uses multiple shuttles to make circular motions in a circular shuttle relative to each other, weaving multiple weft yarns at the same time, and realizing the process of weaving the flat yarns into cloth by interlacing the warp and weft. There are many spindles on the warp rack. According to the width of the woven fabric and the width of the flat yarn, a certain number of warp yarns are selected. Before the warp yarns enter the weaving area of ​​the circular loom, the heald frame cross-opens the warp yarns. While the warp yarns are lifted, the weft yarns are wound around the cylinder at equal intervals to weave into a cylindrical cloth.

[0003] In the guide rail pair composed of the circular loom shuttle and the reed, the reed that forms the circular shuttle is a stationary part, and a reed groove for the warp to move up and down must be left between the reeds. The circular loom shuttle is a moving part. When the circular loom shuttle makes a high-speed circular motion in the circular shuttle of the reed and weaves, the centripetal force of the circular loom shuttle is exerted on the shuttle back wheel or shuttle back slide of the circular loom shuttle by the reed. The magnitude of the centripetal force is proportional to the square of the shuttle angular velocity. Therefore, the guide rail pair composed of the circular loom shuttle and the reed plays a decisive role in the weaving speed, energy consumption, noise and reliability of the circular loom.

[0004] There are three types of known annular shuttle structures: Figure 1 , Figure 2 The first type is shown, in which the annular shed 5 is composed of a limited number of straight reed blades 7, and spaces for no more than four warp threads are provided between adjacent straight reed blades 7, and the straight reed blades 7 are parallel to the axis of the annular shed 5; Figure 3 , Figure 4 The second type is shown, in which the annular shed 5 is composed of straight steel columns 8, and spaces for more than 10 warp threads are provided between adjacent straight steel columns 8, and the straight steel columns 8 are parallel to the axis of the annular shed 5; Figure 5 , Figure 6 The third type is shown, in which the annular shuttle 5 is composed of a limited number of rollers 9, spaces for passing more than 10 warp threads are set between adjacent rollers 9, and the axes of the rollers 9 are parallel to the axis of the annular shuttle 5.

[0005] There are two types of known circular loom shuttle structures: Figure 7 The shuttle 1 shown has four shuttle back wheels 11, Figure 8 The shuttle 1 shown has two shuttle back slides 12.

[0006] The guide rail pair composed of the above-known annular shuttle and shuttle has four combinations, namely: Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown, they all have inevitable defects:

[0007] Fig. 9 In the guide rail pair shown, the four shuttle back wheels 11 on the shuttle 1 roll on the annular shuttle track 5 composed of straight reed pieces 7. The movement direction of the shuttle 1 is perpendicular to the straight steel bar. Since there are gaps between the straight reed pieces 7, the inner cylindrical surface of the annular shuttle track 5 is intermittent. Therefore, during the movement of the shuttle 1, the outer cylindrical surfaces of the four shuttle back wheels 11 and the inner cylindrical surface of the annular shuttle track 5 are in a tangent, intersecting, tangent, and intersecting cycle alternating state, causing the shuttle 1 to jump, increasing noise, reducing the life of the shuttle back wheel 11, and limiting the movement speed of the shuttle 1.

[0008] Fig.10 , Fig.11 In the guide rail pair shown, the two shuttle back slide plates 12 on the shuttle 1 slide on the annular shuttle track 5 composed of the straight reed pieces 7 or the straight steel columns 8, and the movement direction of the shuttle 1 is perpendicular to the straight reed pieces 7 or the straight steel columns 8. These two types of guide rail pairs have large sliding friction and high heat generation when working, thus limiting the movement speed of the shuttle 1, increasing noise and energy consumption; at the same time, since the sliding surface needs to be lubricated, the lubricating oil will contaminate the cloth surface.

[0009] Fig.12 In the guide rail pair shown, the two shuttle back slides 12 on the shuttle 1 move in the annular shuttle track 5 composed of rollers 9, and the movement direction of the shuttle 1 is perpendicular to the rollers. The rollers 9 are equipped with bearings. When the shuttle 1 passes, the two shuttle back slides 12 drive the rollers 9 to rotate. Such a combined structure is complex, has poor reliability, and is noisy. In addition, the rollers 9 have a large diameter, which causes the warp to be unevenly distributed, reducing the quality of the cloth surface. Summary of the invention

[0010] One of the purposes of the present invention is to provide a rolling guide pair for continuous contact between a shuttle and a reed, which has the effects of simple structure, smooth operation, low noise, greatly improving the shuttle movement speed and service life, and reducing the impact on the quality of the cloth surface.

[0011] The above technical objectives of the present invention are achieved through the following technical solutions:

[0012] A shuttle and reed blade continuous contact rolling guide pair, comprising an annular shuttle track and a shuttle, wherein the annular shuttle track comprises an upper ring track, a lower ring track and reed blades arranged in an even array between the upper ring track and the lower ring track, and the shuttle is provided with a shuttle back wheel which performs a circular motion relative to the annular shuttle track;

[0013] The reed blade comprises two integrally formed inclined sections, the two inclined sections form a V-shaped structure and the V-shaped opening is arranged horizontally, the width of the shuttle back wheel is W, the angle between the inclined section corresponding to the upper 1 / 2 width of the shuttle back wheel and the axis of the shuttle back wheel is β1, the angle between the inclined section corresponding to the lower 1 / 2 width of the shuttle back wheel and the axis of the shuttle back wheel is β2, the thickness of a single reed blade is δ, the spacing between adjacent reed grooves is L, δ>0, L>0, |β1|>tg -1 (2L / W), |β2|>tg -1 (2L / W), |β1|=|β2|.

[0014] By adopting the above technical solution, although the reed blades are still distributed in intervals, when |β1|>tg -1 (2L / W), |β2|>tg -1 (2L / W), |β1|=|β2|, the projections of adjacent reed pieces on the axial direction of the annular shuttle can always have overlapping areas, the outer cylindrical surface of the shuttle back wheel is always tangent to the inner cylindrical surface of the annular reed, and the line connecting the tangent points is the common generatrix of the inner cylindrical surface of the annular reed and the outer cylindrical surface of the shuttle back wheel, so that the shuttle back wheel and the two can form a continuous rolling guide pair during the movement, which is more stable, with less friction, low noise, high reliability, greatly improved shuttle running speed, and longer service life. At the same time, the overall structure is relatively simple, no lubricating oil is needed, and no pollution is caused to the cloth surface.

[0015] The present invention is further configured as follows: the shuttle back wheels are provided with two and are distributed front and back along the shuttle movement direction, and the shuttle width is H, 0.5H <W<H。

[0016] The present invention is further configured as follows: the shuttle back wheels are provided with two groups along the shuttle movement direction, each group of the shuttle back wheels is composed of n sub-shuttle back wheels, the widths of the plurality of sub-shuttle back wheels are W1, W2, W3...Wn in sequence, and the shuttle width is H, W1+W2+W3+...+Wn≤W, 0.5H <W<H。

[0017] The present invention is further configured as follows: the reed blade further comprises two straight segments, the two straight segments are integrally formed with one end of the inclined segment which faces away from each other, and the length direction of the straight segment is parallel to the axis of the annular shed.

[0018] The present invention is further configured such that: the annular shed is integrally formed by laser cutting.

[0019] Another object of the present invention is to provide a circular loom with a simple structure, stable operation, low noise, greatly improved shuttle movement speed and service life, and reduced impact on fabric quality.

[0020] The above technical objectives of the present invention are achieved through the following technical solutions.

[0021] A circular loom comprises a frame and a mainframe of the circular loom arranged on the frame, wherein the mainframe of the circular loom is provided with the above-mentioned rolling guide rail pair for continuous contact between the shuttle and the reed.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. During the shuttle's motion, the outer cylindrical surface of the rolling shuttle back wheel and the inner cylindrical surface of the annular shuttle track always remain tangent, and the two can form a continuous rolling guide pair;

[0024] 2. When working, the shuttle back wheel rolls continuously on the circular shuttle track, running smoothly and with low noise, which can greatly increase the movement speed of the shuttle;

[0025] 3. Simple structure and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a circular shuttle composed of a limited number of straight steel bars in the prior art;

[0027] Figure 2 yes Figure 1 A cross-sectional view along the KK direction;

[0028] Figure 3 It is a schematic diagram of the structure of a circular shuttle composed of a limited number of straight steel columns in the prior art;

[0029] Figure 4 yes Figure 3 Cross-sectional view along MM direction;

[0030] Figure 5 It is a schematic diagram of the structure of a circular shuttle composed of a limited number of rollers in the prior art;

[0031] Figure 6 yes Figure 5 The cross-sectional view along the NN direction;

[0032] Figure 7 It is a schematic diagram of the structure of a shuttle with a shuttle back wheel in the prior art;

[0033] Figure 8 It is a schematic diagram of the structure of a shuttle with a shuttle back slide in the prior art;

[0034] Fig. 9 It is a schematic diagram used in the prior art to reflect the matching relationship between the shuttle back wheel and the straight reed piece;

[0035] Fig.10It is a schematic diagram used in the prior art to reflect the matching relationship between the shuttle back slide plate and the straight reed plate;

[0036] Fig.11 It is a schematic diagram used in the prior art to reflect the matching relationship between the shuttle back wheel and the straight steel column;

[0037] Fig.12 It is a schematic diagram used in the prior art to reflect the matching relationship between the shuttle back slide plate and the roller;

[0038] Fig.13 It is a motion track diagram used in the prior art to reflect the axis of the shuttle back wheel when the shuttle back wheel cooperates with the straight reed piece;

[0039] Fig.14 It is a schematic structural diagram of a shuttle with a shuttle back wheel in Embodiment 1 of the present invention;

[0040] Fig.15 It is a schematic diagram for reflecting the matching relationship between the shuttle back wheel and the reed piece in Embodiment 1 of the present invention;

[0041] Fig.16 It is used in Example 1 of the present invention to reflect |β1|>tg -1 Schematic diagram of the matching relationship between the reed blade and the shuttle back wheel at (2L / W);

[0042] Fig.17 It is used in Example 1 of the present invention to reflect |β2|=tg -1 Schematic diagram of the coordination relationship between the shuttle back wheel and the reed blade at (2L / W);

[0043] Fig.18 is a schematic diagram for illustrating the connection relationship between the inclined segment and the straight segment in Embodiment 1 of the present invention;

[0044] Fig.19 It is a schematic diagram for reflecting the matching relationship between the shuttle back wheel and the reed piece in Embodiment 2 of the present invention;

[0045] Fig. 20 It is a schematic structural diagram of a shuttle with a shuttle back wheel in Embodiment 3 of the present invention;

[0046] Fig.21 It is a schematic diagram for reflecting the matching relationship between the shuttle back wheel and the reed piece in embodiment 3 of the present invention;

[0047] Fig. 22 It is a schematic structural diagram for reflecting the overall structure of the circular loom in Example 4 of the present invention.

[0048] In the figure, 1, shuttle; 11, shuttle back wheel; 11, sub-shuttle back wheel; 12, shuttle back slide plate; 2, upper ring runway; 3, reed blade; 31, reed groove; 32, inclined section; 33, straight section; 4, lower ring runway; 5, circular shuttle track; 6, frame; 61, circular loom mainframe; 7, straight reed blade; 8, straight steel column; 9, roller. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0050] Example 1: Fig.14 and 15 As shown, a shuttle and reed blade continuous contact rolling guide pair disclosed in the present invention comprises an annular shed 5 and a shuttle 1. The annular shed 5 is made of steel and formed in one piece by laser cutting. It comprises an upper ring track 2, a lower ring track 4 and a reed blade 3. The inner arc surface of the reed blade 3 is consistent with the arc of the annular shed 5 and there are several reed blades 3 evenly arrayed along the circumference of the annular shed 5. The upper and lower ends of the reed blade 3 are respectively fixed to the upper ring track 2 and the lower ring track 4. Two shuttle back wheels 11 are provided on one side of the shuttle 1 facing the annular shed 5 along its arc direction. The shuttle back wheels 11 make circular motion along the inner circle of the annular shed 5. The shuttle back wheels 11 coincide with the central axis of the reed blade 3 along the arc direction of the annular shed 5.

[0051] like Fig.15 and 16 As shown, the reed blade 3 includes two inclined sections 32, one end of the two inclined sections 32 is fixed to form a V-shape, and the opening direction of the V-shape is set horizontally. In this embodiment, the opening direction of the V-shape is the same as the circumferential motion direction of the shuttle back wheel 11, that is, the shuttle back wheel 11 moves clockwise along the annular shuttle track 5, and the V-shape opens horizontally to the right. The spacing between adjacent reed blades 3 is L, and the spacing forms a reed groove 31. Suppose the thickness of a single reed blade 3 is δ, the width of the shuttle back wheel 11 is W, and the width of the shuttle 1 is H. The angle between the inclined section 32 corresponding to the upper 0.5W of the shuttle back wheel 11 and the axis of the shuttle back wheel 11 is β1, and the angle between the inclined section 32 corresponding to the lower 0.5W of the shuttle back wheel 11 and the axis of the shuttle back wheel 11 is β2. Among them, |β1|>tg -1 (2L / W), |β2|>tg -1 (2L / W), |β1|=|β2|, 0.5H <W<H。

[0052] Assume |β1|=tg -1 (2L / W), e.g. Fig.17 As shown, the projection of the part of the reed blade 3 corresponding to the width of the shuttle back wheel 11 in the axial direction of the annular shuttle track 5 just forms a continuous circle. At this time, it has been theoretically shown that the shuttle back wheel 11 can roll continuously with the annular shuttle track 5, but at the transition position between the two reed blades 3, the shuttle back wheel 11 and the reed blade 3 are in point contact and cannot withstand force; when |β1|>tg-1 (2L / W), |β2| > tg -1 When the condition of (2L / W) is met, the projection of the part of the reed blade 3 corresponding to the width of the shuttle back wheel 11 on the axial direction of the annular shuttle path 5 not only forms a continuous circle, but also has an overlap. At the transition position of the two reed blades 3, the shuttle back wheel 11 and the reed blade 3 are in line contact and can bear force. The annular shuttle path 5 can then provide a continuous runway for the shuttle back wheel 11, and the two form a continuous rolling guide pair.

[0053] Taking the top view of the movement of the straight reed blade 7 and the shuttle back wheel 11 in the prior art as a comparison, as Fig.13 shown, since the movement direction of the shuttle back wheel 11 is perpendicular to the straight reed blade 7, the movement trajectory of the center of the shuttle back wheel 11 is C1, and C1 is a continuous curved line. The outer cylindrical surface of the shuttle back wheel 11 and the inner cylindrical surface of the annular shuttle path 5 are in a cyclic alternating state of tangency and intersection, resulting in the jumping of the shuttle 1. While in this embodiment, the movement trajectory of the center of the shuttle back wheel 11 is completely consistent with the radian of the annular shuttle path 5. At the same time, setting the width of the shuttle back wheel 11 to 0.5H < W < H can also keep a sufficient large contact area between the shuttle back wheel 11 and the annular shuttle path 5 while meeting the condition of forming a continuous rolling guide pair, thereby increasing the smoothness of the operation of the shuttle back wheel 11. Compared with the existing transmission of the shuttle back slide plate 12 and the straight reed blade 7 or the straight steel column 8 or the roller 9, it not only has small friction and simple structure, but also avoids the use of lubricating oil and will not cause pollution to the cloth surface; compared with the existing transmission of the shuttle back wheel 11 and the straight reed blade 7 or the straight steel column 8, it avoids the phenomenon of the jumping of the shuttle 1, so that the shuttle back wheel 11 runs more smoothly, has low noise, high reliability, a greatly increased running speed, and a longer service life.

[0054] In the specific implementation process, the manufacturing process of the annular shuttle path 5 can be: first select a steel plate, use a laser cutting machine to integrally cut and form the annular shuttle path 5, then bend the entire annular shuttle path 5, and finally perform surface sanding.

[0055] As a preference, as Fig.18 shown, at both ends of the two inclined sections 32 facing away from each other, there are straight sections 33 integrally formed, and the length direction of the straight sections 33 is consistent with the axial direction of the annular shuttle path 5. Since the warp yarn needs to pass through the reed slot 31, if the straight section 33 is not provided, when the reed blade 3 is formed, the opening angle of its V-shaped opening will inevitably increase, and the inclination angle of the reed slot 31 will also increase accordingly. And the warp yarn needs to move up and down in the reed slot 31 during the weaving process. If the inclination angle of the reed slot 31 is too large, it is easy to have a large friction with the warp yarn. Therefore, the setting of the straight section 33 can be used to reduce the initial V-shaped opening angle of the reed blade 3 and reduce the possibility of a large friction between the warp yarn and the reed slot 31.

[0056] Embodiment 2: A shuttle and reed continuous contact rolling guide pair, as Fig.19 shown. The difference from Embodiment 1 is that the V-shaped opening direction of the reed 3 is opposite to the circumferential movement direction of the shuttle back wheel 11, that is, the shuttle back wheel 11 moves clockwise along the annular shuttle path 5, and the V-shaped opening is horizontally to the left.

[0057] Embodiment 3: A shuttle and reed continuous contact rolling guide pair, as Fig. 20 and 21 shown. The difference from Embodiment 1 is that two sets of shuttle back wheels 11 are provided before and after along the movement direction of the shuttle 1. Each set of shuttle back wheels 11 is composed of n sub-shuttle back wheels 111, and the widths of the sub-shuttle back wheels 111 are W1, W2, W3... Wn in sequence, and W1 + W2 + W3 +... + Wn ≤ W, 0.5H < W < H. In this embodiment, the number of the sub-shuttle back wheels 111 is 4, and their widths are W1, W2, W3, W4 in sequence, then W1 + W2 + W3 + W4 ≤ W.

[0058] Embodiment 4: A circular loom, as Fig. 22 shown, includes a frame 6 and a circular loom main machine 61 arranged on the frame 6. The circular loom main machine 61 is internally provided with the above-mentioned shuttle and reed continuous contact rolling guide pair.

[0059] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A shuttle and reed blade continuous contact rolling guide pair, comprising an annular shuttle track (5) and a shuttle (1), wherein the annular shuttle track (5) comprises an upper ring track (2), a lower ring track (4) and reed blades (3) arranged in an even array between the upper ring track (2) and the lower ring track (4), and the shuttle (1) is provided with a shuttle back wheel (11) which moves in a circular motion relative to the annular shuttle track (5), characterized in that: The reed blade (3) comprises two integrally formed inclined sections (32), the two inclined sections (32) form a V-shaped structure and the V-shaped opening is arranged horizontally, the width of the shuttle back wheel (11) is W, the angle between the inclined section (32) corresponding to the upper 1 / 2 width of the shuttle back wheel (11) and the axis of the shuttle back wheel (11) is β1, the angle between the inclined section (32) corresponding to the lower 1 / 2 width of the shuttle back wheel (11) and the axis of the shuttle back wheel (11) is β2, the thickness of a single reed blade (3) is δ, the spacing between adjacent reed blades (3) is L, δ>0, L>0, |β1|>tg -1 (2L / W), |β2|>tg -1 (2L / W), |β1|=|β2|.

2. The shuttle and reed continuous contact rolling guide pair according to claim 1, characterized in that: The shuttle back wheels (11) are provided with two and are distributed front and back along the moving direction of the shuttle (1). Assuming the width of the shuttle (1) is H, 0.5H <W<H。 3. The shuttle and reed continuous contact rolling guide pair according to claim 1, characterized in that: The shuttle back wheels (11) are provided with two groups front and rear along the shuttle (1) movement direction, each group of the shuttle back wheels (11) is composed of n sub-shuttle back wheels (111), the widths of the plurality of sub-shuttle back wheels (111) are W1, W2, W3, ... Wn in sequence, assuming that the width of the shuttle (1) is H, W1+W2+W3+ ... +Wn≤W, 0.5H <W<H。 4. A shuttle and reed continuous contact rolling guide pair according to claim 2 or 3, characterized in that: The reed blade (3) further comprises two straight segments (33), the two straight segments (33) being integrally formed with one end of the inclined segment (32) which faces away from each other, and the length direction of the straight segments (33) being parallel to the axis of the annular shed (5).

5. The shuttle and reed continuous contact rolling guide pair according to claim 1, characterized in that: The annular shed (5) is integrally formed by laser cutting.

6. A circular loom, comprising a frame (6) and a circular loom main machine (61) arranged on the frame (6), characterized in that: The circular loom mainframe (61) is provided with a shuttle and reed continuous contact rolling guide pair as described in any one of claims 1 to 5.

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